Automatic welding method for microdeformation of cylinder sleeve of bottom upright of large hydraulic support

A hydraulic support and automatic welding technology, which is applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of high heat input, large deformation, and unreachable pistons, and achieve high laser energy input, fast welding speed, and improved The effect of work efficiency

Inactive Publication Date: 2012-08-01
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the continuous high heat input during the welding process, the deformation after welding cannot be effectively controlled, and the deformation (ellipticity) is less than or equal to 0.3mm
[0007] In the welding process of the above welding method, the heat input is large and the heat accumulation is large, which makes the heat-affected zone of the weldment large, and will generate a large binding force after welding, which is easy to cause local stress concentration and large deformation.
Even if post-heat treatment is carried out af

Method used

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  • Automatic welding method for microdeformation of cylinder sleeve of bottom upright of large hydraulic support

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] An automatic welding method for micro-deformation of the cylinder liner of the bottom column of a large hydraulic support, which is carried out according to the following steps:

[0027] Step 1: Fix the hydraulic support bottom column cylinder liner and its base to be welded on the chuck of the CNC machine tool;

[0028] Step 2: Loading the iron-based alloy powder into a powder feeding device coaxial with the optical axis of the laser beam of the laser;

[0029] Step 3: Set the parameters of the powder feeding device and the laser welding parameters of the laser;

[0030] Laser welding parameters of the laser: the laser power is 2000W, and the welding speed is 3mm / s;

[0031] Powder feeding device parameters: powder feeding volume is 230g / min;

[0032] Step 4: Turn on the laser, powder feeding device and CNC machine tool at the same time to automatically complete the welding process.

[0033] The composition of the iron-based alloy powder describ...

Example Embodiment

[0036] Example 2:

[0037] An automatic welding method for micro-deformation of the cylinder liner of the bottom column of a large hydraulic support, which is carried out according to the following steps:

[0038] Step 1: Fix the hydraulic support bottom column cylinder liner and its base to be welded on the chuck of the CNC machine tool;

[0039] Step 2: Loading the iron-based alloy powder into a powder feeding device coaxial with the optical axis of the laser beam of the laser;

[0040] Step 3: Set the parameters of the powder feeding device and the laser welding parameters of the laser;

[0041] Laser welding parameters of the laser: the laser power is 2500W, and the welding speed is 5mm / s;

[0042] Powder feeding device parameters: powder feeding volume is 248g / min;

[0043] Step 4: Turn on the laser, powder feeding device and CNC machine tool at the same time to automatically complete the welding process.

[0044] The composition of the iron-based alloy powder describ...

Example Embodiment

[0047] Example 3:

[0048] An automatic welding method for micro-deformation of the cylinder liner of the bottom column of a large hydraulic support, which is carried out according to the following steps:

[0049] Step 1: Fix the hydraulic support bottom column cylinder liner and its base to be welded on the chuck of the CNC machine tool;

[0050] Step 2: Loading the iron-based alloy powder into a powder feeding device coaxial with the optical axis of the laser beam of the laser;

[0051] Step 3: Set the parameters of the powder feeding device and the laser welding parameters of the laser;

[0052] Laser welding parameters of the laser: the laser power is 3000W, and the welding speed is 6mm / s;

[0053] Powder feeding device parameters: powder feeding volume is 258g / min;

[0054] Step 4: Turn on the laser, powder feeding device and CNC machine tool at the same time to automatically complete the welding process.

[0055] The composition of the iron-based alloy powder described...

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Abstract

The invention discloses an automatic welding method for the microdeformation of a cylinder sleeve of a bottom upright of a large hydraulic support, belonging to the technical field of laser welding and relating to a welding method for a cylinder sleeve of a bottom upright of a hydraulic support, in particular to a self-fluxing high-energy rapid laser input welding method capable of controlling deformation in a welding process. The automatic welding method for the microdeformation of the cylinder sleeve of the bottom upright of the large hydraulic support, provided by the invention, can be used for effectively controlling the deformation after the cylinder sleeve is welded, so that the stroke of the bottom upright of the hydraulic support is up to the maximum. The method is carried out according to the following steps of: fixing a to-be-welded cylinder sleeve of the bottom upright of the hydraulic support and a base of the cylinder sleeve on a chuck of a numerical control machine tool; filling iron-base alloy powder into a powder feeding device coaxial with the optical axis of a laser beam of a laser; setting the parameter of the powder feeding device and the laser welding parameter of the laser; and starting the laser, the powder feeding device and the numerical control machine tool to automatically finish the welding process.

Description

technical field [0001] The invention belongs to the technical field of laser welding, and relates to a welding method for a cylinder liner of a bottom column of a hydraulic support. In particular, it relates to a self-fluxing high-energy rapid-input laser welding method capable of controlling deformation during the welding process. Background technique [0002] The hydraulic support is an important part of the heavy hydraulic equipment used in coal mines. It forms an organic whole with the drum shearer, the flexible scraper conveyor, the reloader and the belt conveyor, etc., and realizes the main processes of mining, support and transportation. The comprehensive mechanized coal mining technology has brought the longwall coal mining technology into a new stage. It can support and control the roof of the working face, isolate the goaf, prevent gangue from entering the mining face, maintain a safe underground working space, and realize the processes of coal dropping, coal load...

Claims

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Application Information

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IPC IPC(8): B23K26/20B23K35/30B23K26/24
Inventor 李刚迟彩芬罗崇辉
Owner LIAONING TECHNICAL UNIVERSITY
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